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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-9492.347510
Energy at 298.15K 
HF Energy-9492.347510
Nuclear repulsion energy463.431550
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at mPW1PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3162 3003 0.52 82.13 0.08 0.16
2 A' 1484 1409 0.33 19.62 0.70 0.82
3 A' 1223 1161 63.77 2.48 0.25 0.40
4 A' 661 628 64.49 6.27 0.74 0.85
5 A' 546 519 5.78 19.18 0.13 0.24
6 A' 142 135 0.04 5.24 0.43 0.60
7 A" 3250 3086 2.41 54.76 0.75 0.86
8 A" 1134 1076 0.06 8.13 0.75 0.86
9 A" 783 744 10.14 2.22 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6191.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 5879.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/3-21G*
ABC
0.79030 0.02922 0.02834

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.111 0.000
Br2 1.892 0.722 0.000
I3 -1.241 -0.665 0.000
H4 -0.234 1.673 0.900
H5 -0.234 1.673 -0.900

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C11.93182.16671.08661.0866
Br21.93183.42632.49692.4969
I32.16673.42632.70042.7004
H41.08662.49692.70041.8000
H51.08662.49692.70041.8000

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 113.316 Br2 C1 H4 108.357
Br2 C1 H5 108.357 I3 C1 H4 107.513
I3 C1 H5 107.513 H4 C1 H5 111.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.657      
2 Br -0.014      
3 I 0.074      
4 H 0.298      
5 H 0.298      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.512 1.255 0.000 1.355
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.298 -0.227 0.000
y -0.227 -49.600 0.000
z 0.000 0.000 -53.072
Traceless
 xyz
x -1.962 -0.227 0.000
y -0.227 3.585 0.000
z 0.000 0.000 -1.623
Polar
3z2-r2-3.246
x2-y2-3.698
xy-0.227
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.002 1.871 0.000
y 1.871 7.162 0.000
z 0.000 0.000 5.351


<r2> (average value of r2) Å2
<r2> 295.810
(<r2>)1/2 17.199